WebThe word earthquake describes any seismic event, whether natural or caused by humans, that generates seismic waves. Earthquakes are caused by: movement at tectonic faults; volcanic activity; landslides; … WebOn 25 April 2015 a 7.8 earthquake struck Nepal in Asia. The earthquake occurred on a convergent collision plate boundary. between the Indian and Eurasian plates. The focus was only eight ...

What is an earthquake? - Internet Geography

Web1..3C - Tsunami - A-LEVEL GEOGRAPHY REVISION: EDEXCEL 1.3C - Tsunami Tsunami can be caused by sub-marine earthquakes at subduction zones as a result of sea-bed and water column displacement. Recent deadly tsunami 2004 Indian Ocean - 9.2 - 24 m wave height - 230,000 deaths 2006 Java - 7.7 - 2-6 m - 800 dead 2009 Samoa - 8.1 - 14 m - … WebThe earthquake struck the city of Christchurch in New Zealand on 22 February 2011. It was a 6.3 magnitude earthquake and the focus was very shallow at 4.99 kilometres deep. The earthquake happened ... crystal glass cube

1.4C Impacts of Tectonic Hazards - A-LEVEL GEOGRAPHY …

Web1.8A - Prediction and Forecasting. Prediction and forecasting (p: role of scientists) accuracy depend on the type and location of the tectonic hazard. Prediction means knowing when are where a natural hazard will strike on a spatial and temporal scale that can be acted on meaningfully in terms of evacuation. Only areas at high risk can be ... WebEarthquakes: Large impacts, as significant earthquakes are common and widespread Tsunami: Very large impacts from a small number of events Comparing impacts between countries is difficult because both the physical nature of the event and the socio-economic profiles of affected places are different. Some general observations are: WebThe magnitude of an earthquake is determined from the logarithm of the amplitude of waves recorded by seismographs. Adjustments are included for the variation in the … crystal glass curtain